Austin Area Reservoirs: Monitored Water Supply Reservoirs are 83.9% full on 2026-04-20

Historical Data

Date Percent Full Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Most recent 2026-04-20 83.9 1,903,876 1,873,033 2,232,539
1 day prior 2026-04-19 83.9 1,903,842 1,872,999 2,232,539
2 days prior 2026-04-18 83.9 1,903,945 1,873,102 2,232,539
1 week prior 2026-04-13 83.7 1,899,912 1,869,069 2,232,539
1 month prior 2026-03-20 84.7 1,920,808 1,889,965 2,232,539
3 months prior 2026-01-20 85.7 1,944,526 1,913,683 2,232,539
6 months prior 2025-10-20 88.6 2,007,946 1,977,103 2,232,539
1 year prior 2025-04-20 51.6 1,183,902 1,153,059 2,232,539
*

 Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

Area Map

Reservoir Storage

Reservoir Type Percent Full Water Level
(ft)
Height Above Conservation Pool
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Buchananas of 2026-04-13 Water Supply 94.8 1,017.98 -2.02 835,428 821,766 866,694 22,054
Georgetownas of 2026-04-20 Water Supply and Flood Control 77.5 783.95 -7.05 29,517 29,454 38,005 1,121
Stillhouse Hollowas of 2026-04-20 Water Supply and Flood Control 96.0 620.55 -1.45 220,709 220,623 229,796 6,227
Travisas of 2026-04-13 Water Supply and Flood Control 73.0 663.52 -17.48 818,222 801,190 1,098,044 14,933